@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap";:root{--primary:#4f46e5;--primary-hover:#4338ca;--primary-light:#eef2ff;--primary-subtle:#4f46e51a;--bg-primary:#fff;--bg-secondary:#f8fafc;--bg-tertiary:#f1f5f9;--bg-elevated:#fff;--bg-overlay:#00000080;--text-primary:#0f172a;--text-secondary:#64748b;--text-tertiary:#94a3b8;--text-inverse:#fff;--border:#e2e8f0;--border-hover:#cbd5e1;--border-focus:#4f46e5;--success:#10b981;--success-light:#d1fae5;--success-text:#065f46;--warning:#f59e0b;--warning-light:#fef3c7;--warning-text:#92400e;--danger:#ef4444;--danger-light:#fee2e2;--danger-text:#991b1b;--info:#3b82f6;--info-light:#dbeafe;--info-text:#1e40af;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 6px -1px #00000012, 0 2px 4px -2px #0000000d;--shadow-lg:0 10px 15px -3px #00000014, 0 4px 6px -4px #0000000a;--shadow-xl:0 20px 25px -5px #0000001a, 0 8px 10px -6px #0000000f;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--radius-2xl:24px;--radius-full:9999px;--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono:"JetBrains Mono", "Fira Code", monospace;--text-xs:.75rem;--text-sm:.875rem;--text-base:1rem;--text-lg:1.125rem;--text-xl:1.25rem;--text-2xl:1.5rem;--text-3xl:1.875rem;--text-4xl:2.25rem;--text-5xl:3rem;--transition-fast:.15s ease;--transition-base:.2s ease;--transition-slow:.3s ease;--sidebar-width:260px;--sidebar-collapsed:72px;--header-height:64px;--z-sidebar:40;--z-header:50;--z-modal-backdrop:60;--z-modal:70;--z-toast:80}[data-theme=dark]{--primary:#818cf8;--primary-hover:#6366f1;--primary-light:#1e1b4b;--primary-subtle:#818cf826;--bg-primary:#0f172a;--bg-secondary:#1e293b;--bg-tertiary:#334155;--bg-elevated:#1e293b;--bg-overlay:#000000b3;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-tertiary:#64748b;--text-inverse:#0f172a;--border:#334155;--border-hover:#475569;--border-focus:#818cf8;--success:#34d399;--success-light:#34d39926;--success-text:#6ee7b7;--warning:#fbbf24;--warning-light:#fbbf2426;--warning-text:#fde68a;--danger:#f87171;--danger-light:#f8717126;--danger-text:#fca5a5;--info:#60a5fa;--info-light:#60a5fa26;--info-text:#93c5fd;--shadow-sm:0 1px 2px #0000004d;--shadow-md:0 4px 6px -1px #0006, 0 2px 4px -2px #0000004d;--shadow-lg:0 10px 15px -3px #00000080, 0 4px 6px -4px #0000004d;--shadow-xl:0 20px 25px -5px #0009, 0 8px 10px -6px #0006}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth;font-size:16px}body{font-family:var(--font-sans);font-size:var(--text-base);color:var(--text-primary);background-color:var(--bg-primary);transition:background-color var(--transition-slow), color var(--transition-slow);line-height:1.6}a{color:var(--primary);transition:color var(--transition-fast);text-decoration:none}a:hover{color:var(--primary-hover)}img{max-width:100%;height:auto;display:block}button{cursor:pointer;background:0 0;border:none;font-family:inherit}input,textarea,select{font-family:inherit;font-size:inherit}ul,ol{list-style:none}h1,h2,h3,h4,h5,h6{color:var(--text-primary);font-weight:700;line-height:1.2}h1{font-size:var(--text-4xl)}h2{font-size:var(--text-3xl)}h3{font-size:var(--text-2xl)}h4{font-size:var(--text-xl)}h5{font-size:var(--text-lg)}h6{font-size:var(--text-base)}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--text-tertiary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}.visually-hidden{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.truncate{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.animate-fade-in{animation:fadeIn var(--transition-slow) ease both}.animate-fade-in-up{animation:fadeInUp var(--transition-slow) ease both}.animate-fade-in-down{animation:fadeInDown var(--transition-slow) ease both}.animate-scale-in{animation:scaleIn var(--transition-slow) ease both}.animate-slide-in-left{animation:slideInLeft var(--transition-slow) ease both}.animate-slide-in-right{animation:slideInRight var(--transition-slow) ease both}.stagger-1{animation-delay:50ms}.stagger-2{animation-delay:.1s}.stagger-3{animation-delay:.15s}.stagger-4{animation-delay:.2s}.stagger-5{animation-delay:.25s}.stagger-6{animation-delay:.3s}.skeleton{background:linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);border-radius:var(--radius-md);background-size:200% 100%;animation:1.5s ease-in-out infinite shimmer}.sidebar{width:var(--sidebar-width);height:100vh;z-index:var(--z-sidebar);background:var(--bg-secondary);border-right:1px solid var(--border);transition:width var(--transition-slow);flex-direction:column;display:flex;position:fixed;top:0;left:0;overflow:hidden}[data-theme=dark] .sidebar{-webkit-backdrop-filter:blur(12px);background:#1e293bd9}.sidebar-collapsed{width:var(--sidebar-collapsed)}.sidebar-brand{align-items:center;gap:var(--space-3);padding:var(--space-5) var(--space-5);height:var(--header-height);border-bottom:1px solid var(--border);display:flex}.sidebar-logo-icon{color:var(--primary);flex-shrink:0}.sidebar-brand-text{font-size:var(--text-xl);color:var(--text-primary);white-space:nowrap;letter-spacing:-.02em;font-weight:800}.sidebar-nav{padding:var(--space-3);gap:var(--space-1);flex-direction:column;flex:1;display:flex;overflow-y:auto}.sidebar-link{align-items:center;gap:var(--space-3);padding:var(--space-2) var(--space-3);border-radius:var(--radius-md);color:var(--text-secondary);font-size:var(--text-sm);transition:all var(--transition-fast);white-space:nowrap;font-weight:500;text-decoration:none;display:flex}.sidebar-link:hover{background:var(--bg-tertiary);color:var(--text-primary)}.sidebar-link-active,.sidebar-link-active:hover{background:var(--primary-subtle);color:var(--primary)}.sidebar-collapsed .sidebar-link{padding:var(--space-2);justify-content:center}.sidebar-bottom{padding:var(--space-3);border-top:1px solid var(--border)}.sidebar-toggle{border-radius:var(--radius-md);width:100%;height:36px;color:var(--text-tertiary);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;justify-content:center;align-items:center;display:flex}.sidebar-toggle:hover{background:var(--bg-tertiary);color:var(--text-primary)}@media (width<=768px){.sidebar{box-shadow:var(--shadow-xl);transform:translate(-100%)}.sidebar.sidebar-mobile-open{transform:translate(0)}.sidebar-collapsed{width:var(--sidebar-width)}}.notif-dropdown{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-xl);width:360px;max-height:480px;box-shadow:var(--shadow-xl);z-index:var(--z-dropdown,200);flex-direction:column;animation:.15s notif-slide-in;display:flex;position:absolute;top:calc(100% + 8px);right:0;overflow:hidden}@keyframes notif-slide-in{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}.notif-dropdown-header{padding:var(--space-4) var(--space-4) var(--space-3);border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;display:flex}.notif-dropdown-title{align-items:center;gap:var(--space-2);font-size:var(--text-sm);color:var(--text-primary);font-weight:700;display:flex}.notif-dropdown-count{background:var(--danger);color:#fff;border-radius:var(--radius-full);padding:1px 6px;font-size:10px;font-weight:700;line-height:1.5}.notif-markall{border-radius:var(--radius-md);background:var(--bg-tertiary);width:28px;height:28px;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);border:none;justify-content:center;align-items:center;display:flex}.notif-markall:hover{background:var(--primary-subtle);color:var(--primary)}.notif-list{flex:1;overflow-y:auto}.notif-item{align-items:flex-start;gap:var(--space-3);width:100%;padding:var(--space-3) var(--space-4);border:none;border-bottom:1px solid var(--border);cursor:pointer;text-align:left;transition:background var(--transition-fast);background:0 0;display:flex}.notif-item:last-child{border-bottom:none}.notif-item:hover{background:var(--bg-secondary)}.notif-item-unread{background:var(--primary-subtle)}.notif-item-unread:hover{background:color-mix(in srgb, var(--primary) 12%, transparent)}.notif-item-icon{border-radius:var(--radius-lg);color:#fff;flex-shrink:0;justify-content:center;align-items:center;width:30px;height:30px;margin-top:2px;display:flex}.notif-item-content{flex:1;min-width:0}.notif-item-title{font-size:var(--text-sm);color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;margin:0 0 2px;font-weight:600;overflow:hidden}.notif-item-body{font-size:var(--text-xs);color:var(--text-secondary);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:0 0 4px;line-height:1.4;display:-webkit-box;overflow:hidden}.notif-item-time{color:var(--text-tertiary);font-size:11px}.notif-unread-dot{background:var(--primary);border-radius:50%;flex-shrink:0;width:8px;height:8px;margin-top:6px}.notif-empty{align-items:center;gap:var(--space-3);padding:var(--space-10) var(--space-4);color:var(--text-tertiary);flex-direction:column;display:flex}.notif-empty p{font-size:var(--text-sm);color:var(--text-secondary);margin:0}@media (width<=480px){.notif-dropdown{width:calc(100vw - 32px);right:-16px}}.header{height:var(--header-height);padding:0 var(--space-6);background:var(--bg-primary);border-bottom:1px solid var(--border);z-index:var(--z-header);transition:background-color var(--transition-slow);justify-content:space-between;align-items:center;display:flex;position:sticky;top:0}[data-theme=dark] .header{-webkit-backdrop-filter:blur(12px);background:#0f172ad9}.header-left{align-items:center;gap:var(--space-3);display:flex}.header-mobile-menu{padding:var(--space-2);color:var(--text-secondary);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;justify-content:center;align-items:center;display:none}.header-mobile-menu:hover{background:var(--bg-tertiary);color:var(--text-primary)}.header-right{align-items:center;gap:var(--space-2);display:flex}.header-action{align-items:center;gap:var(--space-1);padding:var(--space-2);color:var(--text-secondary);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);font-size:var(--text-xs);background:0 0;border:none;font-weight:500;display:flex}.header-action:hover{background:var(--bg-tertiary);color:var(--text-primary)}.header-action-label{font-size:var(--text-xs);text-align:center;min-width:20px;font-weight:600}.header-notif-wrapper,.header-notification{position:relative}.header-action-active{background:var(--bg-tertiary);color:var(--text-primary)}.notification-badge{background:var(--danger);color:#fff;border-radius:var(--radius-full);text-align:center;border:2px solid var(--bg-primary);pointer-events:none;min-width:16px;height:16px;padding:0 4px;font-size:10px;font-weight:700;line-height:16px;position:absolute;top:4px;right:4px}[data-theme=dark] .notification-badge{border-color:#0f172ad9}.header-divider{background:var(--border);width:1px;height:24px;margin:0 var(--space-2)}.header-user{align-items:center;gap:var(--space-3);display:flex}.header-avatar{border-radius:var(--radius-full);background:linear-gradient(135deg, var(--primary), var(--primary-hover));color:#fff;width:36px;height:36px;font-size:var(--text-xs);flex-shrink:0;justify-content:center;align-items:center;font-weight:700;display:flex}.header-user-info{flex-direction:column;display:flex}.header-user-name{font-size:var(--text-sm);color:var(--text-primary);font-weight:600;line-height:1.2}.header-user-role{font-size:var(--text-xs);color:var(--text-tertiary);text-transform:capitalize}@media (width<=768px){.header-mobile-menu{display:flex}.header-user-info,.header-action-label{display:none}}.layout{min-height:100vh;display:flex}.layout-main{margin-left:var(--sidebar-width);transition:margin-left var(--transition-slow);flex-direction:column;flex:1;min-height:100vh;display:flex}.layout-collapsed .layout-main{margin-left:var(--sidebar-collapsed)}.layout-content{padding:var(--space-6);flex:1;width:100%;max-width:1200px;margin:0 auto;animation:.3s both fadeInUp}.layout-overlay{background:var(--bg-overlay);z-index:calc(var(--z-sidebar) - 1);animation:.2s fadeIn;position:fixed;inset:0}@media (width<=768px){.layout-main,.layout-collapsed .layout-main{margin-left:0}.layout-content{padding:var(--space-4)}}.btn{justify-content:center;align-items:center;gap:var(--space-2);border-radius:var(--radius-md);transition:all var(--transition-base);white-space:nowrap;cursor:pointer;border:1px solid #0000;font-weight:500;line-height:1;display:inline-flex}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-sm{padding:var(--space-2) var(--space-3);font-size:var(--text-sm);border-radius:var(--radius-sm)}.btn-md{padding:var(--space-2) var(--space-4);font-size:var(--text-sm);height:40px}.btn-lg{padding:var(--space-3) var(--space-6);font-size:var(--text-base);border-radius:var(--radius-lg);height:48px}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover);box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border-color:var(--border)}.btn-secondary:hover:not(:disabled){background:var(--border);border-color:var(--border-hover)}.btn-ghost{color:var(--text-secondary);background:0 0}.btn-ghost:hover:not(:disabled){background:var(--bg-tertiary);color:var(--text-primary)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover:not(:disabled){opacity:.9;box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn-outline{color:var(--primary);border-color:var(--primary);background:0 0}.btn-outline:hover:not(:disabled){background:var(--primary-subtle)}.btn-full{width:100%}.btn-spinner{border:2px solid #ffffff4d;border-top-color:#fff;border-radius:50%;width:16px;height:16px;animation:.6s linear infinite spin}.btn-secondary .btn-spinner{border-color:#00000026;border-top-color:var(--text-primary)}.landing{min-height:100vh}.landing-header{z-index:100;-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);background:#fffc;position:fixed;top:0;left:0;right:0}[data-theme=dark] .landing-header{background:#0f172acc}.landing-header-inner{max-width:1200px;padding:0 var(--space-6);justify-content:space-between;align-items:center;height:64px;margin:0 auto;display:flex}.landing-logo{align-items:center;gap:var(--space-2);font-size:var(--text-xl);color:var(--text-primary);letter-spacing:-.02em;font-weight:800;display:flex}.landing-logo svg{color:var(--primary)}.landing-header-actions{align-items:center;gap:var(--space-2);display:flex}.landing-icon-btn{align-items:center;gap:var(--space-1);padding:var(--space-2);color:var(--text-secondary);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);font-size:var(--text-xs);background:0 0;border:none;font-weight:600;display:flex}.landing-icon-btn:hover{background:var(--bg-tertiary);color:var(--text-primary)}.landing-hero{min-height:90vh;padding:calc(64px + var(--space-12)) var(--space-6) var(--space-12);justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.landing-hero-bg{position:absolute;inset:0;overflow:hidden}.landing-hero-orb{filter:blur(80px);opacity:.25;border-radius:50%;position:absolute}.landing-hero-orb-1{background:#4f46e5;width:500px;height:500px;animation:8s ease-in-out infinite alternate float;top:-100px;right:-100px}.landing-hero-orb-2{background:#059669;width:400px;height:400px;animation:10s ease-in-out infinite alternate-reverse float;bottom:-50px;left:-50px}.landing-hero-orb-3{background:#d97706;width:300px;height:300px;animation:12s ease-in-out infinite alternate float;top:50%;left:50%;transform:translate(-50%,-50%)}[data-theme=dark] .landing-hero-orb{opacity:.15}@keyframes float{0%{transform:translate(0)scale(1)}to{transform:translate(30px,-30px)scale(1.1)}}.landing-hero-content{text-align:center;max-width:700px;position:relative}.landing-hero-badge{align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);background:var(--primary-subtle);color:var(--primary);border-radius:var(--radius-full);font-size:var(--text-sm);margin-bottom:var(--space-6);font-weight:600;display:inline-flex}.landing-hero-title{letter-spacing:-.03em;margin-bottom:var(--space-6);white-space:pre-line;background:linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:clamp(2.5rem,6vw,4rem);font-weight:800;line-height:1.1}.landing-hero-subtitle{font-size:var(--text-lg);color:var(--text-secondary);max-width:560px;margin:0 auto var(--space-8);line-height:1.7}.landing-hero-actions{gap:var(--space-4);flex-wrap:wrap;justify-content:center;display:flex}.landing-features{padding:var(--space-16) var(--space-6);background:var(--bg-secondary)}.landing-features-inner{max-width:1100px;margin:0 auto}.landing-section-header{text-align:center;margin-bottom:var(--space-12)}.landing-section-header h2{font-size:var(--text-3xl);letter-spacing:-.02em;margin-bottom:var(--space-3);font-weight:800}.landing-section-header p{color:var(--text-secondary);font-size:var(--text-lg)}.landing-features-grid{gap:var(--space-6);grid-template-columns:repeat(auto-fit,minmax(240px,1fr));display:grid}.landing-feature-card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-8);transition:all var(--transition-base)}.landing-feature-card:hover{box-shadow:var(--shadow-lg);border-color:var(--border-hover);transform:translateY(-4px)}.landing-feature-icon{border-radius:var(--radius-lg);width:48px;height:48px;margin-bottom:var(--space-5);justify-content:center;align-items:center;display:flex}.landing-feature-card h3{font-size:var(--text-lg);margin-bottom:var(--space-2);font-weight:700}.landing-feature-card p{color:var(--text-secondary);font-size:var(--text-sm);line-height:1.6}.landing-cta{padding:var(--space-16) var(--space-6)}.landing-cta-inner{text-align:center;max-width:600px;margin:0 auto}.landing-cta-inner h2{font-size:var(--text-3xl);letter-spacing:-.02em;margin-bottom:var(--space-3);font-weight:800}.landing-cta-inner p{color:var(--text-secondary);font-size:var(--text-lg);margin-bottom:var(--space-8)}.landing-footer{border-top:1px solid var(--border);padding:var(--space-8) var(--space-6)}.landing-footer-inner{justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;display:flex}.landing-footer-brand{align-items:center;gap:var(--space-2);color:var(--text-primary);font-weight:700;display:flex}.landing-footer-brand svg{color:var(--primary)}.landing-footer-inner p{color:var(--text-tertiary);font-size:var(--text-sm)}@media (width<=640px){.landing-hero{min-height:auto;padding:calc(64px + var(--space-8)) var(--space-4) var(--space-8)}.landing-hero-actions{flex-direction:column;align-items:center}.landing-footer-inner{gap:var(--space-3);text-align:center;flex-direction:column}}.input-group{gap:var(--space-1);flex-direction:column;display:flex}.input-label{font-size:var(--text-sm);color:var(--text-primary);font-weight:500}.input-wrapper{align-items:center;display:flex;position:relative}.input-icon{color:var(--text-tertiary);pointer-events:none;position:absolute;left:12px}.input{width:100%;padding:var(--space-2) var(--space-3);background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-md);height:40px;color:var(--text-primary);font-size:var(--text-sm);transition:all var(--transition-fast);outline:none}.input::placeholder{color:var(--text-tertiary)}.input:hover{border-color:var(--border-hover)}.input:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px var(--primary-subtle)}.input-with-icon{padding-left:40px}.input-textarea{resize:vertical;height:auto;min-height:100px;line-height:1.5}.input-error .input{border-color:var(--danger)}.input-error .input:focus{box-shadow:0 0 0 3px var(--danger-light)}.input-error-text{font-size:var(--text-xs);color:var(--danger)}.auth-page{min-height:100vh;padding:var(--space-6);justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.auth-bg{position:absolute;inset:0;overflow:hidden}.auth-orb{filter:blur(100px);opacity:.2;border-radius:50%;position:absolute}.auth-orb-1{background:#4f46e5;width:500px;height:500px;animation:8s ease-in-out infinite alternate float;top:-150px;right:-150px}.auth-orb-2{background:#059669;width:400px;height:400px;animation:10s ease-in-out infinite alternate-reverse float;bottom:-100px;left:-100px}[data-theme=dark] .auth-orb{opacity:.1}.auth-card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-2xl);width:100%;max-width:440px;padding:var(--space-10);box-shadow:var(--shadow-xl);position:relative}.auth-header{text-align:center;margin-bottom:var(--space-8)}.auth-logo{background:linear-gradient(135deg, var(--primary), var(--primary-hover));border-radius:var(--radius-xl);color:#fff;width:56px;height:56px;margin-bottom:var(--space-5);justify-content:center;align-items:center;display:inline-flex}.auth-header h1{font-size:var(--text-2xl);letter-spacing:-.02em;margin-bottom:var(--space-1);font-weight:800}.auth-header p{color:var(--text-secondary);font-size:var(--text-sm)}.auth-form{gap:var(--space-4);flex-direction:column;display:flex}.auth-confirm-icon{background:var(--primary-subtle);width:72px;height:72px;color:var(--primary);border-radius:var(--radius-full);margin-bottom:var(--space-4);justify-content:center;align-items:center;display:inline-flex}.auth-error{background:var(--danger-light);color:var(--danger-text);padding:var(--space-3) var(--space-4);border-radius:var(--radius-md);font-size:var(--text-sm);font-weight:500}.auth-role-select{gap:var(--space-2);flex-direction:column;display:flex}.auth-role-options{gap:var(--space-3);grid-template-columns:1fr 1fr;display:grid}.auth-role-btn{align-items:center;gap:var(--space-2);padding:var(--space-4);border:2px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-primary);color:var(--text-secondary);font-weight:500;font-size:var(--text-sm);cursor:pointer;transition:all var(--transition-base);flex-direction:column;display:flex}.auth-role-btn:hover{border-color:var(--border-hover);background:var(--bg-tertiary)}.auth-role-active{border-color:var(--primary);background:var(--primary-subtle);color:var(--primary)}.auth-role-emoji{font-size:1.5rem}.auth-footer-text{text-align:center;margin-top:var(--space-6);font-size:var(--text-sm);color:var(--text-secondary)}.auth-footer-text a{color:var(--primary);font-weight:600}.auth-demo-accounts{margin-top:var(--space-6);padding-top:var(--space-4);border-top:1px solid var(--border)}.auth-demo-title{font-size:var(--text-xs);color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--space-3);text-align:center;font-weight:600}.auth-demo-grid{gap:var(--space-2);grid-template-columns:1fr 1fr;display:grid}.auth-demo-btn{align-items:center;gap:var(--space-1);padding:var(--space-3);border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-secondary);cursor:pointer;transition:all var(--transition-fast);flex-direction:column;display:flex}.auth-demo-btn:hover{border-color:var(--primary);background:var(--primary-subtle)}.auth-demo-role{font-size:var(--text-sm);color:var(--text-primary);font-weight:600}.auth-demo-email{color:var(--text-tertiary);font-size:10px}@media (width<=480px){.auth-card{padding:var(--space-6)}}.course-card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-xl);cursor:pointer;transition:all var(--transition-base);overflow:hidden}.course-card:hover{box-shadow:var(--shadow-lg);border-color:var(--border-hover);transform:translateY(-3px)}.course-card-banner{justify-content:center;align-items:center;height:100px;display:flex;position:relative}.course-card-banner-icon{color:#fff6}.course-card-archived{top:var(--space-2);right:var(--space-2);color:#fff;border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.05em;background:#0000004d;padding:2px 8px;font-size:10px;font-weight:600;position:absolute}.course-card-body{padding:var(--space-4)}.course-card-title{font-size:var(--text-base);margin-bottom:var(--space-1);color:var(--text-primary);font-weight:700}.course-card-teacher{align-items:center;gap:var(--space-1);font-size:var(--text-xs);color:var(--text-tertiary);margin-bottom:var(--space-2);font-weight:500;display:flex}.course-card-desc{font-size:var(--text-sm);color:var(--text-secondary);-webkit-line-clamp:2;margin-bottom:var(--space-3);-webkit-box-orient:vertical;line-height:1.5;display:-webkit-box;overflow:hidden}.course-card-meta{gap:var(--space-4);display:flex}.course-card-stat{align-items:center;gap:var(--space-1);font-size:var(--text-xs);color:var(--text-tertiary);font-weight:500;display:flex}.card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all var(--transition-base)}.card-pad-sm{padding:var(--space-3)}.card-pad-md{padding:var(--space-5)}.card-pad-lg{padding:var(--space-8)}.card-pad-none{padding:0}.card-hover:hover{border-color:var(--border-hover);box-shadow:var(--shadow-md)}.card-clickable{cursor:pointer}.card-clickable:hover{border-color:var(--primary);box-shadow:var(--shadow-md)}.card-header{padding-bottom:var(--space-4);border-bottom:1px solid var(--border);margin-bottom:var(--space-4);justify-content:space-between;align-items:center;gap:var(--space-3);display:flex}.card-body{flex:1}.card-footer{padding-top:var(--space-4);border-top:1px solid var(--border);margin-top:var(--space-4);justify-content:flex-end;align-items:center;gap:var(--space-3);display:flex}.badge{align-items:center;gap:var(--space-1);border-radius:var(--radius-full);white-space:nowrap;font-weight:500;line-height:1;display:inline-flex}.badge-sm{padding:2px 8px;font-size:11px}.badge-md{font-size:var(--text-xs);padding:4px 12px}.badge-default{background:var(--bg-tertiary);color:var(--text-secondary)}.badge-primary{background:var(--primary-subtle);color:var(--primary)}.badge-success{background:var(--success-light);color:var(--success-text)}.badge-warning{background:var(--warning-light);color:var(--warning-text)}.badge-danger{background:var(--danger-light);color:var(--danger-text)}.badge-info{background:var(--info-light);color:var(--info-text)}.badge-dot{background:currentColor;border-radius:50%;width:6px;height:6px}.dashboard{animation:.3s both fadeInUp}.dashboard-header{margin-bottom:var(--space-6);justify-content:space-between;align-items:flex-start;gap:var(--space-4);display:flex}.dashboard-title{font-size:var(--text-3xl);letter-spacing:-.02em;margin-bottom:var(--space-1);font-weight:800}.dashboard-subtitle{color:var(--text-secondary);font-size:var(--text-base)}.dashboard-stats{gap:var(--space-4);margin-bottom:var(--space-8);grid-template-columns:repeat(auto-fit,minmax(200px,1fr));display:grid}.dashboard-stat-card{align-items:center;gap:var(--space-4);display:flex}.stat-icon{border-radius:var(--radius-lg);flex-shrink:0;justify-content:center;align-items:center;width:48px;height:48px;display:flex}.stat-content{flex-direction:column;display:flex}.stat-value{font-size:var(--text-2xl);color:var(--text-primary);font-weight:800;line-height:1}.stat-label{font-size:var(--text-xs);color:var(--text-secondary);margin-top:var(--space-1);font-weight:500}.dashboard-grid{gap:var(--space-8);flex-direction:column;display:flex}.dashboard-section-header{margin-bottom:var(--space-4);justify-content:space-between;align-items:center;display:flex}.dashboard-section-header h2{font-size:var(--text-xl);font-weight:700}.dashboard-section-link{align-items:center;gap:var(--space-1);font-size:var(--text-sm);color:var(--primary);font-weight:500;text-decoration:none;display:flex}.dashboard-section-link:hover{text-decoration:underline}.dashboard-courses-grid{gap:var(--space-4);grid-template-columns:repeat(auto-fill,minmax(280px,1fr));display:grid}.dashboard-list{gap:var(--space-2);flex-direction:column;display:flex}.dashboard-list-item{justify-content:space-between;align-items:center;gap:var(--space-3);display:flex}.dashboard-list-item-content{align-items:center;gap:var(--space-3);flex:1;min-width:0;display:flex}.dashboard-list-dot{border-radius:50%;flex-shrink:0;width:8px;height:8px}.dashboard-list-title{font-size:var(--text-sm);color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;font-weight:600;overflow:hidden}.dashboard-list-meta{font-size:var(--text-xs);color:var(--text-tertiary)}@media (width<=640px){.dashboard-header{flex-direction:column}.dashboard-stats{grid-template-columns:1fr 1fr}.dashboard-courses-grid{grid-template-columns:1fr}}.modal-backdrop{background:var(--bg-overlay);z-index:var(--z-modal-backdrop);padding:var(--space-4);justify-content:center;align-items:center;animation:.15s fadeIn;display:flex;position:fixed;inset:0}.modal{background:var(--bg-elevated);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);width:100%;max-height:85vh;z-index:var(--z-modal);flex-direction:column;display:flex}.modal-sm{max-width:400px}.modal-md{max-width:560px}.modal-lg{max-width:720px}.modal-xl{max-width:900px}.modal-header{padding:var(--space-5) var(--space-6);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;display:flex}.modal-title{font-size:var(--text-lg);font-weight:600}.modal-close{color:var(--text-tertiary);padding:var(--space-1);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;justify-content:center;align-items:center;display:flex}.modal-close:hover{background:var(--bg-tertiary);color:var(--text-primary)}.modal-body{padding:var(--space-6);flex:1;overflow-y:auto}.modal-footer{padding:var(--space-4) var(--space-6);border-top:1px solid var(--border);justify-content:flex-end;align-items:center;gap:var(--space-3);display:flex}.course-detail{animation:.3s both fadeInUp}.course-detail-banner{margin:calc(var(--space-6) * -1);padding:var(--space-8) var(--space-6);color:#fff;flex-direction:column;justify-content:flex-end;min-height:200px;margin-bottom:0;display:flex;position:relative}.course-detail-banner:after{content:"";background:linear-gradient(#0000001a,#00000080);position:absolute;inset:0}.course-detail-back{top:var(--space-4);left:var(--space-4);align-items:center;gap:var(--space-2);color:#fff;font-size:var(--text-sm);z-index:2;padding:var(--space-1) var(--space-3);border-radius:var(--radius-full);transition:background var(--transition-fast);background:#0003;font-weight:500;text-decoration:none;display:flex;position:absolute}.course-detail-back:hover{color:#fff;background:#0006}.course-detail-banner-content{z-index:2;position:relative}.course-detail-banner-content h1{font-size:var(--text-3xl);color:#fff;margin-bottom:var(--space-2);font-weight:800}.course-detail-banner-content p{font-size:var(--text-base);opacity:.9;max-width:600px;margin-bottom:var(--space-4)}.course-detail-banner-stats{gap:var(--space-6);font-size:var(--text-sm);opacity:.85;flex-wrap:wrap;display:flex}.course-detail-banner-stats span{align-items:center;gap:var(--space-1);display:flex}.course-invite-code strong{font-family:var(--font-mono);letter-spacing:.1em;border-radius:var(--radius-sm);background:#fff3;padding:1px 8px}.course-tabs{gap:var(--space-1);border-bottom:1px solid var(--border);margin:var(--space-6) 0;display:flex;overflow-x:auto}.course-tab{align-items:center;gap:var(--space-2);padding:var(--space-3) var(--space-4);font-size:var(--text-sm);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;background:0 0;border:none;border-bottom:2px solid #0000;font-weight:500;display:flex}.course-tab:hover{color:var(--text-primary)}.course-tab-active{color:var(--primary);border-bottom-color:var(--primary)}.course-tab-count{background:var(--bg-tertiary);border-radius:var(--radius-full);padding:1px 7px;font-size:11px;font-weight:600}.course-tab-active .course-tab-count{background:var(--primary-subtle);color:var(--primary)}.course-tab-content{min-height:300px}.course-tab-header{margin-bottom:var(--space-4);justify-content:space-between;align-items:center;display:flex}.course-tab-header h2{font-size:var(--text-lg);font-weight:700}.course-filter{align-items:center;gap:var(--space-2);color:var(--text-secondary);display:flex}.course-filter-select{font-size:var(--text-sm);border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-elevated);color:var(--text-primary);cursor:pointer;outline:none;padding:4px 10px}.course-filter-select:focus{border-color:var(--primary)}.course-empty{padding:var(--space-12);color:var(--text-tertiary);justify-content:center;align-items:center;gap:var(--space-3);flex-direction:column;display:flex}.course-empty p{font-size:var(--text-base);font-weight:500}.course-not-found{padding:var(--space-16);text-align:center;color:var(--text-tertiary);font-size:var(--text-lg)}.assignment-list{gap:var(--space-3);flex-direction:column;display:flex}.assignment-list-link{color:inherit;text-decoration:none}.assignment-item-top{justify-content:space-between;align-items:flex-start;gap:var(--space-3);margin-bottom:var(--space-3);display:flex}.assignment-item-info h3{font-size:var(--text-base);margin-bottom:var(--space-1);font-weight:700}.assignment-item-desc{font-size:var(--text-sm);color:var(--text-secondary);-webkit-line-clamp:2;-webkit-box-orient:vertical;line-height:1.5;display:-webkit-box;overflow:hidden}.assignment-item-bottom{align-items:center;gap:var(--space-4);padding-top:var(--space-3);border-top:1px solid var(--border);display:flex}.assignment-stat{align-items:center;gap:var(--space-1);font-size:var(--text-xs);color:var(--text-tertiary);font-weight:500;display:flex}.assignment-chevron{color:var(--text-tertiary);margin-left:auto}.assignment-edit-btn{width:28px;height:28px;color:var(--text-secondary);cursor:pointer;border-radius:var(--radius-sm);transition:all var(--transition-fast);background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;display:flex}.assignment-edit-btn:hover{background:var(--bg-tertiary);color:var(--primary)}.students-list{gap:var(--space-2);flex-direction:column;display:flex}.student-item{align-items:center;gap:var(--space-3);display:flex}.student-avatar{border-radius:var(--radius-full);color:#fff;width:40px;height:40px;font-size:var(--text-xs);flex-shrink:0;justify-content:center;align-items:center;font-weight:700;display:flex}.student-info{flex-direction:column;display:flex}.student-name{font-size:var(--text-sm);color:var(--text-primary);font-weight:600}.student-email{font-size:var(--text-xs);color:var(--text-tertiary)}.announcement-feed{gap:var(--space-4);flex-direction:column;display:flex}.announcement-feed-item{max-width:720px}.announcement-feed-header{margin-bottom:var(--space-3)}.announcement-feed-author{align-items:center;gap:var(--space-3);display:flex}.announcement-feed-avatar{border-radius:var(--radius-full);color:#fff;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:11px;font-weight:700;display:flex}.announcement-feed-name{font-size:var(--text-sm);color:var(--text-primary);font-weight:600}.announcement-feed-time{font-size:var(--text-xs);color:var(--text-tertiary)}.announcement-feed-title{font-size:var(--text-base);margin-bottom:var(--space-2);font-weight:700}.announcement-feed-content{font-size:var(--text-sm);color:var(--text-secondary);line-height:1.7}.submit-section{margin-top:var(--space-4);padding-top:var(--space-4);border-top:1px solid var(--border)}.submit-section h4{font-size:var(--text-sm);margin-bottom:var(--space-3);font-weight:600}.submission-status{align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);background:var(--bg-tertiary);border-radius:var(--radius-md);margin-top:var(--space-3);display:flex}.submission-status-info{gap:var(--space-1);flex-direction:column;display:flex}.submission-status-label{font-size:var(--text-xs);color:var(--text-tertiary);font-weight:500}.submission-status-grade{font-size:var(--text-lg);color:var(--success);font-weight:800}.submission-feedback{font-size:var(--text-sm);color:var(--text-secondary);margin-top:var(--space-2);padding:var(--space-3);background:var(--bg-tertiary);border-radius:var(--radius-md);border-left:3px solid var(--primary);font-style:italic}@media (width<=640px){.course-detail-banner{padding:var(--space-6) var(--space-4);min-height:160px}.course-detail-banner-content h1{font-size:var(--text-2xl)}.course-detail-banner-stats{gap:var(--space-2);flex-direction:column}.assignment-item-top{flex-direction:column}}.library-tab-list,.library-tab-card{gap:var(--space-3);flex-direction:column;display:flex}.library-tab-card-header{align-items:center;gap:var(--space-3);display:flex}.library-tab-card-icon{border-radius:var(--radius-lg);color:#fff;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;display:flex}.library-tab-card-title{font-size:var(--text-base);color:var(--text-primary);flex:1;margin:0;font-weight:700}.library-tab-card-actions{align-items:center;gap:var(--space-1);display:flex}.library-tab-card-desc{padding-top:var(--space-2);border-top:1px solid var(--border)}.rte-group{gap:var(--space-1);flex-direction:column;display:flex}.rte-wrapper{border:1px solid var(--border);border-radius:var(--radius-md);transition:border-color var(--transition-fast);background:var(--bg-primary);overflow:hidden}.rte-wrapper:focus-within{border-color:var(--border-focus);box-shadow:0 0 0 3px var(--primary-subtle)}.rte-error .rte-wrapper{border-color:var(--danger)}.rte-toolbar{padding:var(--space-1) var(--space-2);border-bottom:1px solid var(--border);background:var(--bg-tertiary);flex-wrap:wrap;align-items:center;gap:2px;display:flex}.rte-btn{border-radius:var(--radius-sm);width:28px;height:28px;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;display:flex}.rte-btn:hover{background:var(--bg-elevated);color:var(--text-primary)}.rte-btn-active{background:var(--primary);color:#fff}.rte-btn-active:hover{background:var(--primary-hover);color:#fff}.rte-divider{background:var(--border);width:1px;height:20px;margin:0 var(--space-1);flex-shrink:0}.rte-editor{padding:var(--space-3)}.rte-content{min-height:120px;font-size:var(--text-sm);color:var(--text-primary);outline:none;line-height:1.6}.rte-content:empty:before{content:attr(data-placeholder);color:var(--text-tertiary);pointer-events:none}.rte-content p{margin-bottom:var(--space-2)}.rte-content p:last-child{margin-bottom:0}.rte-content h2{font-size:var(--text-lg);margin-bottom:var(--space-2);margin-top:var(--space-3);color:var(--text-primary);font-weight:700}.rte-content h3{font-size:var(--text-base);margin-bottom:var(--space-2);margin-top:var(--space-2);color:var(--text-primary);font-weight:600}.rte-content h2:first-child,.rte-content h3:first-child{margin-top:0}.rte-content ul,.rte-content ol{padding-left:var(--space-5);margin-bottom:var(--space-2)}.rte-content ul{list-style:outside}.rte-content ol{list-style:decimal}.rte-content li{margin-bottom:var(--space-1);font-size:var(--text-sm);color:var(--text-primary)}.rte-content strong{font-weight:700}.rte-content em{font-style:italic}.rte-view{font-size:var(--text-sm);color:var(--text-primary);line-height:1.6}.rte-view p{margin-bottom:var(--space-2)}.rte-view p:last-child{margin-bottom:0}.rte-view h2{font-size:var(--text-lg);margin-bottom:var(--space-2);margin-top:var(--space-3);font-weight:700}.rte-view h3{font-size:var(--text-base);margin-bottom:var(--space-2);margin-top:var(--space-2);font-weight:600}.rte-view h2:first-child,.rte-view h3:first-child{margin-top:0}.rte-view ul,.rte-view ol{padding-left:var(--space-5);margin-bottom:var(--space-2)}.rte-view ul{list-style:outside}.rte-view ol{list-style:decimal}.rte-view li{margin-bottom:var(--space-1)}.rte-view strong{font-weight:700}.rte-view em{font-style:italic}.review-page{animation:.3s both fadeInUp}.attachment-link{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-full);font-size:var(--text-xs);color:var(--primary);margin-top:var(--space-1);margin-right:var(--space-1);transition:all var(--transition-fast);align-items:center;gap:4px;padding:3px 10px;text-decoration:none;display:inline-flex}.review-header{margin-bottom:var(--space-8)}.review-back-link{align-items:center;gap:var(--space-2);color:var(--text-secondary);font-size:var(--text-sm);margin-bottom:var(--space-3);transition:color var(--transition-fast);font-weight:500;text-decoration:none;display:inline-flex}.review-back-link:hover{color:var(--primary)}.review-header h1{font-size:var(--text-3xl);letter-spacing:-.02em;margin-bottom:var(--space-2);font-weight:800}.review-desc{color:var(--text-secondary);font-size:var(--text-base);margin-bottom:var(--space-4);line-height:1.6}.review-meta{gap:var(--space-2);flex-wrap:wrap;display:flex}.review-section{margin-bottom:var(--space-8)}.review-section-title{align-items:center;gap:var(--space-2);font-size:var(--text-lg);margin-bottom:var(--space-4);color:var(--text-primary);font-weight:700;display:flex}.review-toggle-graded{align-items:center;gap:var(--space-2);width:100%;padding:var(--space-3) var(--space-4);background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);font-size:var(--text-sm);color:var(--text-secondary);cursor:pointer;margin-bottom:var(--space-3);transition:background var(--transition-fast);font-weight:600;display:flex}.review-toggle-graded:hover{background:var(--bg-tertiary)}.review-toggle-arrow{font-size:var(--text-xs);margin-left:auto}.review-list{gap:var(--space-3);flex-direction:column;display:flex}.review-card{max-width:720px}.review-card-pending{border-left:3px solid var(--warning)}.review-card-header{margin-bottom:var(--space-3);justify-content:space-between;align-items:center;display:flex}.review-card-student{align-items:center;gap:var(--space-3);display:flex}.review-avatar{border-radius:var(--radius-full);color:#fff;width:40px;height:40px;font-size:var(--text-xs);flex-shrink:0;justify-content:center;align-items:center;font-weight:700;display:flex}.review-student-name{font-size:var(--text-sm);color:var(--text-primary);font-weight:600}.review-submitted-at{font-size:var(--text-xs);color:var(--text-tertiary)}.review-card-content{padding:var(--space-3) var(--space-4);background:var(--bg-tertiary);border-radius:var(--radius-md);margin-bottom:var(--space-3)}.review-card-content p{font-size:var(--text-sm);color:var(--text-primary);line-height:1.6}.review-card-feedback{gap:var(--space-2);padding:var(--space-3) var(--space-4);background:var(--primary-subtle);border-radius:var(--radius-md);border-left:3px solid var(--primary);display:flex}.review-card-feedback svg{color:var(--primary);flex-shrink:0;margin-top:2px}.review-card-feedback p{font-size:var(--text-sm);color:var(--text-secondary);font-style:italic;line-height:1.5}.review-grade-display{align-items:baseline;gap:2px;display:flex}.review-grade-value{font-size:var(--text-2xl);color:var(--success);font-weight:800}.review-grade-max{font-size:var(--text-sm);color:var(--text-tertiary);font-weight:500}.grade-submission-preview{background:var(--bg-tertiary);border-radius:var(--radius-md);padding:var(--space-4)}.grade-submission-preview h4{font-size:var(--text-xs);color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--space-2);font-weight:600}.grade-submission-preview p{font-size:var(--text-sm);color:var(--text-primary);line-height:1.6}@media (width<=640px){.review-card-header{align-items:flex-start;gap:var(--space-3);flex-direction:column}}.file-upload-group{gap:var(--space-2);flex-direction:column;display:flex}.file-upload-zone{border:2px dashed var(--primary);border-radius:var(--radius-lg);padding:var(--space-5) var(--space-4);align-items:center;gap:var(--space-2);cursor:pointer;transition:all var(--transition-base);background:var(--primary-subtle);text-align:center;flex-direction:column;display:flex}.file-upload-zone:hover,.file-upload-dragging{border-color:var(--primary);background:var(--primary-subtle)}.file-upload-icon{color:var(--text-tertiary);transition:color var(--transition-base)}.file-upload-zone:hover .file-upload-icon,.file-upload-dragging .file-upload-icon{color:var(--primary)}.file-upload-text{font-size:var(--text-sm);color:var(--text-secondary);margin:0;font-weight:600}.file-upload-hint{font-size:var(--text-xs);color:var(--text-tertiary);margin:0}.file-upload-list{gap:var(--space-2);flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.file-upload-item{align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);background:var(--bg-tertiary);border-radius:var(--radius-md);border:1px solid var(--border);display:flex}.file-upload-file-icon{color:var(--primary);flex-shrink:0}.file-upload-name{font-size:var(--text-sm);color:var(--text-primary);text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.file-upload-size{font-size:var(--text-xs);color:var(--text-tertiary);flex-shrink:0}.file-upload-remove{cursor:pointer;color:var(--text-tertiary);border-radius:var(--radius-sm);transition:all var(--transition-base);background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;padding:2px;display:flex}.file-upload-remove:hover{color:var(--danger);background:var(--danger-light)}.create-page{max-width:680px}.create-page-header{margin-bottom:var(--space-6)}.create-page-back{align-items:center;gap:var(--space-2);font-size:var(--text-sm);color:var(--text-secondary);margin-bottom:var(--space-4);transition:color var(--transition-base);text-decoration:none;display:inline-flex}.create-page-back:hover{color:var(--primary)}.create-page-header h1{align-items:center;gap:var(--space-3);font-size:var(--text-2xl);color:var(--text-primary);font-weight:800;display:flex}.create-page-card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-8);box-shadow:var(--shadow-md)}.create-form{gap:var(--space-5);flex-direction:column;display:flex}.create-form-actions{justify-content:flex-end;gap:var(--space-3);padding-top:var(--space-4);border-top:1px solid var(--border);display:flex}.submit-assignment-info{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-6);margin-bottom:var(--space-6);box-shadow:var(--shadow-sm)}.submit-assignment-info h2{font-size:var(--text-xl);color:var(--text-primary);margin-bottom:var(--space-2);font-weight:700}.submit-assignment-info p{font-size:var(--text-sm);color:var(--text-secondary);margin-bottom:var(--space-3);line-height:1.6}.submit-attachments{align-items:center;gap:var(--space-2);margin-top:var(--space-3);font-size:var(--text-sm);flex-wrap:wrap;display:flex}.submit-attachments-label{align-items:center;gap:var(--space-1);color:var(--text-secondary);font-weight:500;display:flex}.attachment-link{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-full);font-size:var(--text-xs);color:var(--primary);transition:all var(--transition-fast);align-items:center;gap:4px;padding:3px 10px;text-decoration:none;display:inline-flex}.attachment-link:hover{background:var(--primary-subtle);border-color:var(--primary)}.submit-already{align-items:center;gap:var(--space-4);padding:var(--space-10);text-align:center;flex-direction:column;display:flex}.submit-already p{font-size:var(--text-lg);color:var(--success);font-weight:600}.submit-already-view{gap:var(--space-4);flex-direction:column;display:flex}.submit-already-header{justify-content:space-between;align-items:center;display:flex}.submit-already-badge{font-size:var(--text-sm);color:var(--success);font-weight:600}.submit-grade-view{gap:var(--space-2);padding:var(--space-3);background:var(--bg-secondary);border-radius:var(--radius-md);border-left:3px solid var(--success);flex-direction:column;display:flex}.submit-grade-value{font-size:var(--text-lg);color:var(--success);font-weight:700}.pending-page{animation:.3s both fadeInUp}.pending-header{margin-bottom:var(--space-6)}.pending-header h1{font-size:var(--text-3xl);letter-spacing:-.02em;font-weight:800}.pending-subtitle{color:var(--text-secondary);font-size:var(--text-sm);margin-top:var(--space-1)}.pending-filters{gap:var(--space-3);margin-bottom:var(--space-6);flex-wrap:wrap;display:flex}.pending-filter{align-items:center;gap:var(--space-2);color:var(--text-secondary);display:flex}.pending-select{padding:var(--space-2) var(--space-3);background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:var(--text-sm);cursor:pointer;transition:border-color var(--transition-fast);outline:none;font-family:inherit}.pending-select:focus{border-color:var(--border-focus)}.pending-list{gap:var(--space-3);flex-direction:column;display:flex}.pending-item{justify-content:space-between;align-items:flex-start;gap:var(--space-4);display:flex}.pending-item-left{gap:var(--space-3);flex:1;min-width:0;display:flex}.pending-item-color{border-radius:var(--radius-full);flex-shrink:0;width:4px;min-height:48px}.pending-item-info{flex:1;min-width:0}.pending-item-title{font-size:var(--text-base);margin-bottom:var(--space-1);font-weight:700}.pending-item-course{font-size:var(--text-xs);color:var(--text-tertiary);margin-bottom:var(--space-1);font-weight:500}.pending-item-desc{font-size:var(--text-sm);color:var(--text-secondary);-webkit-line-clamp:2;-webkit-box-orient:vertical;line-height:1.5;display:-webkit-box;overflow:hidden}.pending-item-right{align-items:flex-end;gap:var(--space-2);flex-direction:column;flex-shrink:0;display:flex}.pending-item-feedback{font-size:var(--text-xs);color:var(--text-secondary);text-align:right;max-width:200px;font-style:italic}.pending-item-due{font-size:var(--text-xs);color:var(--text-tertiary);align-items:center;gap:4px;margin-top:2px;display:flex}.pending-empty{padding:var(--space-16);color:var(--text-tertiary);justify-content:center;align-items:center;gap:var(--space-4);text-align:center;flex-direction:column;display:flex}.pending-empty p{font-size:var(--text-lg);font-weight:500}@media (width<=640px){.pending-item{flex-direction:column}.pending-item-right{align-items:flex-start}}.announcements-page{animation:.3s both fadeInUp}.announcements-header{margin-bottom:var(--space-6);justify-content:space-between;align-items:flex-start;gap:var(--space-4);display:flex}.announcements-header h1{font-size:var(--text-3xl);letter-spacing:-.02em;font-weight:800}.announcements-list{gap:var(--space-4);flex-direction:column;max-width:720px;display:flex}.announcement-card{transition:all var(--transition-base)}.announcement-card:hover{border-color:var(--border-hover);box-shadow:var(--shadow-sm)}.announcement-top{margin-bottom:var(--space-3);justify-content:space-between;align-items:center;display:flex}.announcement-author{align-items:center;gap:var(--space-3);display:flex}.announcement-avatar{border-radius:var(--radius-full);color:#fff;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:11px;font-weight:700;display:flex}.announcement-author-name{font-size:var(--text-sm);color:var(--text-primary);font-weight:600}.announcement-meta{font-size:var(--text-xs);color:var(--text-tertiary)}.announcement-title{font-size:var(--text-base);margin-bottom:var(--space-2);font-weight:700}.announcement-content{font-size:var(--text-sm);color:var(--text-secondary);line-height:1.7}.announcements-empty{padding:var(--space-16);color:var(--text-tertiary);justify-content:center;align-items:center;gap:var(--space-4);text-align:center;flex-direction:column;display:flex}.announcements-empty p{font-size:var(--text-lg);font-weight:500}.courses-page{animation:.3s both fadeInUp}.courses-header{margin-bottom:var(--space-6);justify-content:space-between;align-items:flex-start;gap:var(--space-4);display:flex}.courses-header h1{font-size:var(--text-3xl);letter-spacing:-.02em;font-weight:800}.courses-subtitle{color:var(--text-secondary);font-size:var(--text-sm);margin-top:var(--space-1)}.courses-actions{gap:var(--space-3);display:flex}.courses-grid{gap:var(--space-4);margin-bottom:var(--space-8);grid-template-columns:repeat(auto-fill,minmax(280px,1fr));display:grid}.courses-section-title{font-size:var(--text-lg);color:var(--text-secondary);margin-bottom:var(--space-4);font-weight:700}.modal-form{gap:var(--space-4);flex-direction:column;display:flex}.color-picker{gap:var(--space-2);flex-wrap:wrap;display:flex}.color-swatch{border-radius:var(--radius-md);cursor:pointer;width:32px;height:32px;transition:all var(--transition-fast);border:3px solid #0000}.color-swatch:hover{transform:scale(1.1)}.color-swatch-active{border-color:var(--text-primary);box-shadow:var(--shadow-md);transform:scale(1.1)}.invite-code-preview{padding:var(--space-3) var(--space-4);background:var(--bg-tertiary);border-radius:var(--radius-md);justify-content:space-between;align-items:center;display:flex}.invite-code-value{font-family:var(--font-mono);font-size:var(--text-lg);color:var(--primary);letter-spacing:.1em;font-weight:700}@media (width<=640px){.courses-header{flex-direction:column}.courses-grid{grid-template-columns:1fr}}.library-page{max-width:860px;padding:var(--space-8) var(--space-6);margin:0 auto}.library-header{margin-bottom:var(--space-6)}.library-header-title{align-items:center;gap:var(--space-4);color:var(--primary);display:flex}.library-header-title h1{font-size:var(--text-2xl);color:var(--text-primary);margin:0;font-weight:800}.library-subtitle{font-size:var(--text-sm);color:var(--text-secondary);margin:var(--space-1) 0 0}.library-toolbar{align-items:center;gap:var(--space-3);margin-bottom:var(--space-6);display:flex}.library-list{gap:var(--space-3);flex-direction:column;display:flex}.library-course-label{font-size:var(--text-xs);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;padding-left:var(--space-3);border-left:3px solid var(--primary);margin:var(--space-5) 0 var(--space-2);font-weight:600}.library-course-label:first-child{margin-top:0}.library-card{transition:box-shadow var(--transition-fast)}.library-card:hover{box-shadow:var(--shadow-md)}.library-card-header{align-items:center;gap:var(--space-3);display:flex}.library-card-icon{border-radius:var(--radius-lg);color:#fff;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;display:flex}.library-card-meta{flex:1;min-width:0}.library-card-title{font-size:var(--text-base);color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;margin:0;font-weight:700;overflow:hidden}.library-card-date{font-size:var(--text-xs);color:var(--text-tertiary)}.library-card-actions{align-items:center;gap:var(--space-2);flex-shrink:0;display:flex}.library-icon-btn{border-radius:var(--radius-md);background:var(--bg-tertiary);width:28px;height:28px;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);border:none;justify-content:center;align-items:center;display:flex}.library-icon-btn:hover{background:var(--bg-secondary);color:var(--text-primary)}.library-icon-btn-danger:hover{color:var(--danger);background:#ef44441a}.library-expand-btn{border-radius:var(--radius-md);background:var(--bg-tertiary);width:28px;height:28px;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);border:none;justify-content:center;align-items:center;display:flex}.library-expand-btn:hover{background:var(--primary-subtle);color:var(--primary)}.library-card-body{margin-top:var(--space-4);padding-top:var(--space-4);border-top:1px solid var(--border)}.library-empty{align-items:center;gap:var(--space-4);padding:var(--space-16) var(--space-6);text-align:center;color:var(--text-tertiary);flex-direction:column;display:flex}.library-empty p{font-size:var(--text-base);color:var(--text-secondary)}.library-confirm-overlay{z-index:var(--z-modal);padding:var(--space-4);background:#0006;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.library-confirm-dialog{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-xl);padding:var(--space-6);width:100%;max-width:360px;box-shadow:var(--shadow-xl)}.library-confirm-dialog p{font-size:var(--text-base);color:var(--text-primary);margin-bottom:var(--space-5)}.library-confirm-actions{justify-content:flex-end;gap:var(--space-3);display:flex}
